Earlier this month, British newspapers reported the story of Paul Marshallsea, a Welshman who, while on a two-month Australian holiday with his wife, wrestled a six-foot shark to prevent it from attacking children in the water. Marshallsea happened to be filmed while doing so, and the pictures went around the world. He was proclaimed a hero. Unfortunately for him, the pictures also reached Wales. He and his wife were supposed to be on sick leave at the time with Â“work-related stress,Â” and his heroics didnÂ’t impress his employers: they sacked him, on the not-unreasonable grounds that if he could travel...